Meaning

noun (music) brilliance of display (as in the performance of music)

noun the craft of making fireworks

noun (usually plural) a device with an explosive that burns at a low rate and with colored flames; can be used to illuminate areas or send signals etc.

originEtymology tree Proto-Indo-European *péh₂wr̥ Proto-Hellenic *pāwər Ancient Greek πῦρ (pûr) Latin pyr English pyro- English technic Proto-Indo-European *-ikos Proto-Italic *-ikos Latin -icuslbor. Old French -iquebor. Middle English -ik English -ic Old English -as Middle English -es English -s English -ics English pyrotechnics From pyro- + technic + -ics.

Etymology from Wiktionary, CC BY-SA 3.0